Preparation of Ultracold Atom Clouds at the Shot Noise Level

Gajdacz, M.; Hilliard, A.J.; Kristensen, M.A.; Pedersen, P.L.; Klempt, Carsten; Arlt, Jan J.; Sherson, J.F.

Original version

Gajdacz, M.; Hilliard, A. J.; Kristensen, M. A.; Pedersen, P. L.; Klempt, C.; et al.: Preparation of Ultracold Atom Clouds at the Shot Noise Level. In: Physical Review Letters 117 (2016), Nr. 7, 73604. DOI: https://doi.org/10.1103/PhysRevLett.117.073604

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To cite the version in the repository, please use this identifier: https://doi.org/10.15488/3592

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Abstract:
We prepare number stabilized ultracold atom clouds through the real-time analysis of nondestructive images and the application of feedback. In our experiments, the atom number N similar to 10(6) is determined by high precision Faraday imaging with uncertainty Delta N below the shot noise level, i.e., Delta N < root N. Based on this measurement, feedback is applied to reduce the atom number to a user-defined target, whereupon a second imaging series probes the number stabilized cloud. By this method, we show that the atom number in ultracold clouds can be prepared below the shot noise level.
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Publication type:	Article
Publishing status:	publishedVersion
Publication date:	2016
Keywords english:	Atom numbers, High-precision, Non destructive, Real time analysis, Second imaging, Shot-noise level, Ultra-cold, Ultracold atoms, quantum, entanglement, number, states, limit
DDC:	530 \| Physik